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1. (WO2017155341) APPARATUS AND METHOD FOR CONTROLLING AUTO FOCUS OF CAMERA MODULE
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Pub. No.: WO/2017/155341 International Application No.: PCT/KR2017/002591
Publication Date: 14.09.2017 International Filing Date: 09.03.2017
IPC:
H04N 5/232 (2006.01) ,G03B 3/10 (2006.01) ,G02B 7/09 (2006.01) ,H04N 5/335 (2011.01) ,G02B 27/64 (2006.01) ,G02B 7/28 (2006.01) ,G03B 13/36 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
222
Studio circuitry; Studio devices; Studio equipment
225
Television cameras
232
Devices for controlling television cameras, e.g. remote control
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
3
Focusing arrangements of general interest for cameras, projectors or printers
10
Power-operated focusing
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
7
Mountings, adjusting means, or light-tight connections, for optical elements
02
for lenses
04
with mechanism for focusing or varying magnification
09
adapted for automatic focusing or varying magnification
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
30
Transforming light or analogous information into electric information
335
using solid-state image sensors [SSIS]
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27
Other optical systems; Other optical apparatus
64
Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
7
Mountings, adjusting means, or light-tight connections, for optical elements
28
Systems for automatic generation of focusing signals
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
13
Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
32
Means for focusing
34
Power focusing
36
Autofocus systems
Applicants:
LG ELECTRONICS INC. [KR/KR]; 128, Yeoui-daero Yeongdeungpo-gu, Seoul 07336, KR
Inventors:
PARK, Haejin; KR
KWON, Sungdu; KR
KWON, Youngman; KR
LEE, Jayong; KR
CHO, Taegil; KR
JI, Salkmann; KR
HONG, Samnyol; KR
Agent:
KIM, Yong In; KR
BAHNG, Hae Cheol; KR
Priority Data:
10-2016-002817409.03.2016KR
10-2016-011782413.09.2016KR
Title (EN) APPARATUS AND METHOD FOR CONTROLLING AUTO FOCUS OF CAMERA MODULE
(FR) APPAREIL ET PROCÉDÉ DE COMMANDE DE MISE AU POINT AUTOMATIQUE D'UN MODULE DE CAMÉRA
Abstract:
(EN) Disclosed are an apparatus and method for controlling auto focus of a camera module including a voice coil motor actuator. The present invention includes a fixed unit having a perforated hole formed therein, a magnet placed inside the fixed unit, a lens unit including at least one lens and configured to linearly move inside the perforated hole of the fixed unit, a moving coil placed on a surface of the lens unit, a fixed coil receiving from the moving coil, a variable current or a variable voltage according a distance moved by the moving coil, an image signal processing unit processing an image signal sensed by an image sensing unit; and a controller configured to provide a signal comprising first frequency signal and second frequency signal to the moving coil, wherein the fixed coil receiving the variable current or the variable voltage through the second frequency signal, and control the lens unit to move by applying the first frequency signal to the moving coil based on the received variable current or variable voltage according a distance moved by the moving coil from the fixed coil and the image signal processed by the image signal processing unit, wherein the second frequency signal is higher than the first frequency signal and is comprised of the signal during a prescribed time.
(FR) L'invention concerne un appareil et un procédé de commande de mise au point automatique d'un module de caméra comprenant un actionneur de moteur à bobine acoustique. La présente invention comprend une unité fixe ayant un trou perforé formé dans celle-ci, un aimant placé à l'intérieur de l'unité fixe, une unité de lentille comprenant au moins une lentille et configurée pour se déplacer linéairement à l'intérieur du trou perforé de l'unité fixe, une bobine mobile placée sur une surface de l'unité de lentille, une bobine fixe recevant, de la bobine mobile, un courant variable ou une tension variable selon une distance déplacée par la bobine mobile, une unité de traitement de signal d'image traitant un signal d'image détecté par une unité de détection d'image ; et un dispositif de commande configuré pour fournir un signal comprenant un premier signal de fréquence et un second signal de fréquence à la bobine mobile, la bobine fixe recevant le courant variable ou la tension variable à travers le second signal de fréquence, et commander l'unité de lentille pour qu'elle se déplace en appliquant le premier signal de fréquence à la bobine mobile sur la base du courant variable reçu ou de la tension variable reçue selon une distance déplacée par la bobine mobile à partir de la bobine fixe et le signal d'image traité par l'unité de traitement de signal d'image, le second signal de fréquence étant supérieur au premier signal de fréquence et étant constitué du signal pendant un temps prescrit.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)